aewl
view main.c @ 333:827f8f6c9e97
separated setup stuff into main.c:setup() - this makes main() more readable
| author | Anselm R. Garbe <arg@10kloc.org> |
|---|---|
| date | Wed, 23 Aug 2006 10:21:57 +0200 |
| parents | cea0c98495bc |
| children | 5c874c619287 |
line source
1 /*
2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
3 * See LICENSE file for license details.
4 */
6 #include "dwm.h"
7 #include <errno.h>
8 #include <stdio.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include <unistd.h>
12 #include <sys/select.h>
13 #include <X11/cursorfont.h>
14 #include <X11/keysym.h>
15 #include <X11/Xatom.h>
16 #include <X11/Xproto.h>
18 /* extern */
20 char stext[1024];
21 Bool *seltag;
22 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
23 unsigned int ntags, numlockmask;
24 Atom wmatom[WMLast], netatom[NetLast];
25 Bool running = True;
26 Bool issel = True;
27 Client *clients = NULL;
28 Client *sel = NULL;
29 Cursor cursor[CurLast];
30 Display *dpy;
31 DC dc = {0};
32 Window root, barwin;
34 /* static */
36 static int (*xerrorxlib)(Display *, XErrorEvent *);
37 static Bool otherwm, readin;
39 static void
40 cleanup()
41 {
42 close(STDIN_FILENO);
43 while(sel) {
44 resize(sel, True, TopLeft);
45 unmanage(sel);
46 }
47 if(dc.font.set)
48 XFreeFontSet(dpy, dc.font.set);
49 else
50 XFreeFont(dpy, dc.font.xfont);
51 XUngrabKey(dpy, AnyKey, AnyModifier, root);
52 XFreePixmap(dpy, dc.drawable);
53 XFreeGC(dpy, dc.gc);
54 XDestroyWindow(dpy, barwin);
55 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
56 XSync(dpy, False);
57 }
59 static void
60 scan()
61 {
62 unsigned int i, num;
63 Window *wins, d1, d2;
64 XWindowAttributes wa;
66 wins = NULL;
67 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
68 for(i = 0; i < num; i++) {
69 if(!XGetWindowAttributes(dpy, wins[i], &wa))
70 continue;
71 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
72 continue;
73 if(wa.map_state == IsViewable)
74 manage(wins[i], &wa);
75 }
76 }
77 if(wins)
78 XFree(wins);
79 }
81 static void
82 setup()
83 {
84 int i, j;
85 unsigned int mask;
86 Window w;
87 XModifierKeymap *modmap;
88 XSetWindowAttributes wa;
90 /* init atoms */
91 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
92 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
93 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
94 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
95 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
96 PropModeReplace, (unsigned char *) netatom, NetLast);
98 /* init cursors */
99 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
100 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
101 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
103 modmap = XGetModifierMapping(dpy);
104 for (i = 0; i < 8; i++) {
105 for (j = 0; j < modmap->max_keypermod; j++) {
106 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
107 numlockmask = (1 << i);
108 }
109 }
110 XFree(modmap);
112 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask | EnterWindowMask | LeaveWindowMask;
113 wa.cursor = cursor[CurNormal];
114 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
116 grabkeys();
117 initrregs();
119 for(ntags = 0; tags[ntags]; ntags++);
120 seltag = emallocz(sizeof(Bool) * ntags);
121 seltag[0] = True;
123 /* style */
124 dc.bg = getcolor(BGCOLOR);
125 dc.fg = getcolor(FGCOLOR);
126 dc.border = getcolor(BORDERCOLOR);
127 setfont(FONT);
129 sx = sy = 0;
130 sw = DisplayWidth(dpy, screen);
131 sh = DisplayHeight(dpy, screen);
132 mw = (sw * MASTERW) / 100;
134 bx = by = 0;
135 bw = sw;
136 dc.h = bh = dc.font.height + 4;
137 wa.override_redirect = 1;
138 wa.background_pixmap = ParentRelative;
139 wa.event_mask = ButtonPressMask | ExposureMask;
140 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
141 CopyFromParent, DefaultVisual(dpy, screen),
142 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
143 XDefineCursor(dpy, barwin, cursor[CurNormal]);
144 XMapRaised(dpy, barwin);
146 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
147 dc.gc = XCreateGC(dpy, root, 0, 0);
149 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
151 strcpy(stext, "dwm-"VERSION);
152 }
154 /*
155 * Startup Error handler to check if another window manager
156 * is already running.
157 */
158 static int
159 xerrorstart(Display *dsply, XErrorEvent *ee)
160 {
161 otherwm = True;
162 return -1;
163 }
165 /* extern */
167 int
168 getproto(Window w)
169 {
170 int i, format, protos, status;
171 unsigned long extra, res;
172 Atom *protocols, real;
174 protos = 0;
175 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
176 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
177 if(status != Success || protocols == 0)
178 return protos;
179 for(i = 0; i < res; i++)
180 if(protocols[i] == wmatom[WMDelete])
181 protos |= PROTODELWIN;
182 free(protocols);
183 return protos;
184 }
186 void
187 sendevent(Window w, Atom a, long value)
188 {
189 XEvent e;
191 e.type = ClientMessage;
192 e.xclient.window = w;
193 e.xclient.message_type = a;
194 e.xclient.format = 32;
195 e.xclient.data.l[0] = value;
196 e.xclient.data.l[1] = CurrentTime;
197 XSendEvent(dpy, w, False, NoEventMask, &e);
198 XSync(dpy, False);
199 }
201 void
202 quit(Arg *arg)
203 {
204 readin = running = False;
205 }
207 /*
208 * There's no way to check accesses to destroyed windows, thus those cases are
209 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
210 * default error handler, which calls exit().
211 */
212 int
213 xerror(Display *dpy, XErrorEvent *ee)
214 {
215 if(ee->error_code == BadWindow
216 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
217 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
218 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
219 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
220 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
221 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess))
222 return 0;
223 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
224 ee->request_code, ee->error_code);
225 return xerrorxlib(dpy, ee); /* may call exit() */
226 }
228 int
229 main(int argc, char *argv[])
230 {
231 int r, xfd;
232 fd_set rd;
234 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
235 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
236 exit(EXIT_SUCCESS);
237 }
238 else if(argc != 1)
239 eprint("usage: dwm [-v]\n");
241 dpy = XOpenDisplay(0);
242 if(!dpy)
243 eprint("dwm: cannot open display\n");
245 xfd = ConnectionNumber(dpy);
246 screen = DefaultScreen(dpy);
247 root = RootWindow(dpy, screen);
249 otherwm = False;
250 XSetErrorHandler(xerrorstart);
251 /* this causes an error if some other window manager is running */
252 XSelectInput(dpy, root, SubstructureRedirectMask);
253 XSync(dpy, False);
255 if(otherwm)
256 eprint("dwm: another window manager is already running\n");
258 XSync(dpy, False);
259 XSetErrorHandler(NULL);
260 xerrorxlib = XSetErrorHandler(xerror);
261 XSync(dpy, False);
263 setup();
264 drawstatus();
265 scan();
267 /* main event loop, also reads status text from stdin */
268 XSync(dpy, False);
269 procevent();
270 readin = True;
271 while(running) {
272 FD_ZERO(&rd);
273 if(readin)
274 FD_SET(STDIN_FILENO, &rd);
275 FD_SET(xfd, &rd);
276 r = select(xfd + 1, &rd, NULL, NULL, NULL);
277 if((r == -1) && (errno == EINTR))
278 continue;
279 if(r > 0) {
280 if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
281 readin = NULL != fgets(stext, sizeof(stext), stdin);
282 if(readin)
283 stext[strlen(stext) - 1] = 0;
284 else
285 strcpy(stext, "broken pipe");
286 drawstatus();
287 }
288 }
289 else if(r < 0)
290 eprint("select failed\n");
291 procevent();
292 }
293 cleanup();
294 XCloseDisplay(dpy);
296 return 0;
297 }